POWERS Spike Mushroom Head Carbon Steel – 1/4" x 3-1/2" – (100) 5531

Powers Spike Mushroom Head Carbon Steel 8.2 Grade The Spike anchor is a patented, one-piece, tamper-proof anchor for use in concrete, block, brick or stone. Several head styles are available and offered in carbon and type 316 stainless steel. The Spike anchor is formed with an "s" shaped configuration at the working end of the anchor to create an expansion mechanism. Since the anchor is pre-expanded, there is no secondary tightening position.